multithreading

问题 I would like to call a GLES20 method when an item from the options menu is selected. public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.clear: GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT); break; // ... } } This does not work since I am in the main thread and not in GLThread . It says: call to OpenGL ES API with no current context (logged once per thread) But what do I have to do to get things working? 回答1: I found the answer on my own: public boolean

问题 Say that I have a function that looks like: def _thread_function(arg1, arg2=None, arg3=None): #Random code Now I want to create a thread using that function, and giving it arg2 but not arg3. I'm trying to this as below: #Note: in this code block I have already set a variable called arg1 and a variable called arg2 threading.Thread(target=self._thread_function, args=(arg1, arg2=arg2), name="thread_function").start() The above code gives me a syntax error. How do I fix it so that I can pass an

问题 I have been doing some research in Google and cant quite get my head around the differences (if any) between concurrent and parallel programs in java. Some of the information I have looked at suggests no differences between both. Is this the case?? 回答1: It depends on who is defining it. The people who created the Go programming language call code Concurrent if it is broken up into pieces which could be treated in parallel, whereas Parallelism implies that those pieces are actually running at

问题 I'm trying to create a discord bot and I need to run an async function in another new Thread since the main Thread is required to run another function (Discord Client) What I'm trying to accomplish: # This methods needs to run in another thread async def discord_async_method(): while True: sleep(10) print("Hello World") ... # Discord Async Logic # This needs to run in the main thread client.run(TOKEN) thread = "" try: # This does not work, throws error "printHelloWorld Needs to be awaited"

问题 I'm trying to create a discord bot and I need to run an async function in another new Thread since the main Thread is required to run another function (Discord Client) What I'm trying to accomplish: # This methods needs to run in another thread async def discord_async_method(): while True: sleep(10) print("Hello World") ... # Discord Async Logic # This needs to run in the main thread client.run(TOKEN) thread = "" try: # This does not work, throws error "printHelloWorld Needs to be awaited"

问题 I am trying to use multithreading in python 3. to speed up some code execution. Basically I have to run the same function on a iterable channels=range(1,8) I have made a working example of what I am using so far. and I am testing it against a normal execution i don't see any significan difference. Maybe I am doing something wrong. a little help would be appreciated #!/usr/bin/env python from threading import Thread import matplotlib.pyplot as plt import pdb # from multiprocessing.dummy import

问题 I am trying to make an animation with multiple thread. I want to paint n squares where this n comes from commend-line argument. Every square has their x-y coordinates, colors and speed. They are moving to the right of the frame with different speed, color and coordinates. Since I am using multi thread I assume I have to control each squares. So I have to store each square object in the ArrayList. However, I am having trouble with painting those squares. I can paint one square but when I try

问题 I am trying to make an animation with multiple thread. I want to paint n squares where this n comes from commend-line argument. Every square has their x-y coordinates, colors and speed. They are moving to the right of the frame with different speed, color and coordinates. Since I am using multi thread I assume I have to control each squares. So I have to store each square object in the ArrayList. However, I am having trouble with painting those squares. I can paint one square but when I try

问题 I am trying to make an animation with multiple thread. I want to paint n squares where this n comes from commend-line argument. Every square has their x-y coordinates, colors and speed. They are moving to the right of the frame with different speed, color and coordinates. Since I am using multi thread I assume I have to control each squares. So I have to store each square object in the ArrayList. However, I am having trouble with painting those squares. I can paint one square but when I try

问题 I'm currently working on a JavaFX project. On GUI initialization I want to read some infos out of a HTML document using Selenium and FirefoxDriver. Normally I would use a crawler to get the infos but this document is full of JavaScript so I was only able to get to the infos using Selenium (I know, it's really bad). Now I've got the problem that this process takes up to 15 seconds and I want to show the progress of Selenium on a JavaFX progress bar. So I've set up a Thread doing all the work